package com.example.demo.services;

import com.example.demo.entity.Buy;
import com.github.pagehelper.PageInfo;

import java.util.List;

public interface BuyService {

    public List<Buy> selectUserId(String id);

    Integer insertBuy(Buy buy);


    public List<Buy> selectAll();


    public PageInfo<Buy> pageSelect(Integer page,Integer size);

}
